Cylinders and spheres are considered bluff bodies because at large Reynolds numbers the drag is dominated by the pressure losses in the wake. The variation of the drag coefficient with Reynolds number ...

Here, a Reynolds number of 1,000 means the wind is only blowing at about 0.18 knots with the drag coefficient ranging from about 10 at the lower flows to 1 at the higher flows.

Wind Engineering, Vol. 15, No. 5 (1991), pp. 240-246 (7 pages) In the present paper a study of the drag and lift coefficients of the Savonius rotor has been carried out for different Reynolds numbers.

This paper analytically evaluates the Oseen drag coefficient CD of a sphere at infinite Reynolds number. For this purpose, the method of induced forces is used. This method enables the obtainment of a ...